Display apparatus and illumination apparatus, and light emitting element and semiconductor device

Abstract

A display apparatus according to one embodiment of the disclosure includes pixels in a plurality. The pixels are two-dimensionally disposed, and the pixels each include light emitting elements of at least a first primary color. The pixels each or pixel groups each include, as the light emitting elements of the first primary color, a first light emitting element and a second light emitting element that have peak wavelengths of light emission in different wavelength bands from each other. The pixel groups each include two or more adjacent ones of the pixels.

1 . A display apparatus, comprising pixels in a plurality, the pixels being two-dimensionally disposed, and the pixels each including light emitting elements of at least a first primary color,
 the pixels each or pixel groups each including, as the light emitting elements of the first primary color, a first light emitting element and a second light emitting element that have peak wavelengths of light emission in different wavelength bands from each other, the pixel groups each including two or more adjacent ones of the pixels.   
     
     
         2 . The display apparatus according to  claim 1 , wherein
 the first light emitting element and the second light emitting elements are disposed, in each of the pixels, in adjacency in a row direction, a column direction, or an oblique direction.   
     
     
         3 . The display apparatus according to  claim 2 , wherein
 the pixels each include, as the light emitting elements of the first primary color, three or more light emitting elements that have the peak wavelengths of the light emission in the different wavelength bands from one another.   
     
     
         4 . The display apparatus according to  claim 1 , wherein
 the first light emitting element and the second light emitting element are disposed, in each of the pixel groups, in two or more pixels in adjacency in a row direction, a column direction, or an oblique direction.   
     
     
         5 . The display apparatus according to  claim 4 , wherein
 the pixel groups each include three or more light emitting elements that have the peak wavelengths of the light emission in the different wavelength bands from one another.   
     
     
         6 . The display apparatus according to  claim 1 , wherein
 the first primary color is a blue color.   
     
     
         7 . The display apparatus according to  claim 6 , wherein
 the pixels each further include a light emitting element of a red color in a singularity and a light emitting element of a green color in a singularity.   
     
     
         8 . The display apparatus according to  claim 6 , wherein
 the pixels each further include light emitting elements of a red color and light emitting elements of a green color, and   the pixels each or the pixel groups each include, as the light emitting elements of the red color, two or more light emitting elements that have the peak wavelengths of the light emission in the different wavelength bands from one another, and the pixels each or the pixel groups each include, as the light emitting elements of the green color, two or more light emitting elements that have the peak wavelengths of the light emission in the different wavelength bands from one another.   
     
     
         9 . The display apparatus according to  claim 1 , wherein
 the first primary color is a red color or a green color.   
     
     
         10 . The display apparatus according to  claim 1 , wherein
 a distance from the first light emitting element to the second light emitting element is set at magnitude within a range in which the distance from the first light emitting element to the second light emitting element becomes equal to or smaller than a resolution distance for an eye, the resolution distance varying with a viewing distance.   
     
     
         11 . The display apparatus according to  claim 1 , wherein
 a difference between the peak wavelengths of the light emission of the first light emitting element and second light emitting element is 5 nm to 30 nm both inclusive.   
     
     
         12 . The display apparatus according to  claim 1 , further comprising:
 a correction processor unit that corrects drive signals of the first light emitting element and the second light emitting element; and   a driver unit that performs a light emission drive of the pixels in the plurality, on a basis of the drive signals corrected,   the correction processor unit correcting the drive signals on a basis of a correction coefficient that is set in advance on a basis of the peak wavelengths of the light emission of the first light emitting element and the second light emitting element.   
     
     
         13 . The display apparatus according to  claim 12 , wherein
 the correction coefficient is set for each of the pixels or for each of the pixel groups.   
     
     
         14 . The display apparatus according to  claim 1 , wherein
 the light emitting element is a light emitting diode (an LED).   
     
     
         15 . The display apparatus according to  claim 1 , wherein the display apparatus is constituted by a plurality of light emitting units that are two-dimensionally disposed and each include the pixels in the plurality. 
     
     
         16 . An illumination apparatus, comprising units in a plurality, the units being two-dimensionally disposed, and the units each including light emitting elements of at least a first primary color,
 the units each or unit groups each including, as the light emitting elements of the first primary color, a first light emitting element and a second light emitting element that have peak wavelengths of light emission in different wavelength bands from each other, the unit groups each including two or more adjacent ones of the pixels.   
     
     
         17 . A light emitting element, comprising:
 a semiconductor layer having a first surface and a second surface, the semiconductor layer including a stack of a first conductive type layer, an active layer, and a second conductive type layer in order from side on which the first surface is disposed;   a first electrode that is electrically coupled to the first conductive type layer and is provided on the first surface; and   a second electrode that is electrically coupled to the second conductive type layer and is provided on the first surface, the second electrode being thicker than the first electrode.   
     
     
         18 . The light emitting element according to  claim 17 , wherein
 the first surface includes a shoulder, the first electrode is provided on a projection of the first surface, and the second electrode is provided on a recess of the first surface.   
     
     
         19 . The light emitting element according to  claim 17 , wherein
 the light emitting element has deviation of a characteristic of light in the second surface.   
     
     
         20 . The light emitting element according to  claim 17 , further comprising a stacked structure in which an insulating layer and a metal layer are provided in order, the stacked structure being provided on at least a mounting surface out of a surface of the semiconductor layer. 
     
     
         21 . The light emitting element according to  claim 20 , wherein
 the stacked structure covers at least an entirety of a side surface of the semiconductor layer.   
     
     
         22 . A light emitting element, comprising:
 a semiconductor layer having a first surface and a second surface, the semiconductor layer including a stack of a first conductive type layer, an active layer, and a second conductive type layer in order from side on which the first surface is disposed;   a first electrode that is electrically coupled to the first conductive type layer and is provided on the first surface, the first electrode having a thickness varied in an in-plane direction; and   a second electrode that is electrically coupled to the second conductive type layer and is provided in in-plane asymmetry in the second surface.   
     
     
         23 . The light emitting element according to  claim 22 , wherein
 the thickness of the first electrode is smaller as a region in which the second electrode is provided is larger, and the thickness of the first electrode is larger as the region in which the second electrode is provided is smaller.   
     
     
         24 . The light emitting element according to  claim 22 , wherein
 the second surface has inclination with respect to a mounting substrate.   
     
     
         25 . A semiconductor device, comprising a plurality of light emitting elements, the plurality of the light emitting elements each including:
 a semiconductor layer having a first surface and a second surface, the semiconductor layer including a stack of a first conductive type layer, an active layer, and a second conductive type layer in order from side on which the first surface is disposed;   a first electrode that is electrically coupled to the first conductive type layer and is provided on the first surface; and   a second electrode that is electrically coupled to the second conductive type layer and is provided on the first surface, the second electrode being thicker than the first electrode.   
     
     
         26 . A semiconductor device, comprising a plurality of light emitting elements, the plurality of the light emitting elements each including:
 a semiconductor layer having a first surface and a second surface, the semiconductor layer including a stack of a first conductive type layer, an active layer, and a second conductive type layer in order from side on which the first surface is disposed;   a first electrode that is electrically coupled to the first conductive type layer and is provided on the first surface, the first electrode having a thickness varied in an in-plane direction; and   a second electrode that is electrically coupled to the second conductive type layer and is provided in in-plane asymmetry in the second surface.